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  1. davevelo

    Crystalyte HS3540, Loose magnets

    Well, after three years, I've had my first motor problem. All the magnets have come loose and will have to be re epoxied back in. Never ran the motor over 100deg centigrade. System is 80v at 40a.
  2. davevelo

    Schwalbe Marathon Plus 47-406 slippery when wet

    Am wondering if anyone else has used this tire on the rear of a velomobile or recumbent? It's inflated to 5 bar which I understand is the max pressure. So far, I've only experienced slippage on damp roads due to fog. Haven't tested in the rain yet. If I accelerate abruptly, the tire will lose...
  3. davevelo

    Hubmotor spokes loosening

    Warning! If you have a powerful hubmotor and have regen enabled, be sure to occasionally check your spoke tension. Mine became loose to the extent that almost all of them were completely slacked.
  4. davevelo

    Grinfineon C7240-NC sensored / sensorless problem

    Followed the procedure to set hall mapping to sensored mode as described at ebikes.ca. The setting was successful and the controller functioned normally. However, after cutting the power to the controller and turning it back on, the controller reverted back to the default sensorless mode. HELP!
  5. davevelo

    Extreme pedaling resistance with power off.

    Hi All, I have a dual battery setup controlled by two 80a relays. I can run on either pack or combine the packs in series for more power. The problem is that when both packs are disconnected from the controller, I get extreme resistance from the HS3540 hub motor. Enough that pedaling is very...
  6. davevelo

    eBrake malfunction using "reed switches".

    Some have attempted (myself included) to use the NC and common terminal of a SPDT reed switch so that when the brake lever is fully retracted, the magnet holds the switch open. I do not recommend this approach. Reed switches can fail either by vibration or shock. In my case, simply allowing the...
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